SEC Form 3 · accession 0002126186-26-000001
LeonaBio, Inc. · LONA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
David J. Portman
10% Owner
Period of report
Aug 24, 2026
Accepted (ET)
Sep 3, 2026 · 3:38 pm EDT
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001620463
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| WarrantF1,F2 | $0.001 | holding | — | — | — | Oct 26, 2026 | — | Common Stock | 5,502,402 | — | I |
Explanation of responses
- F1The warrant is held by Sermonix Pharmaceuticals, Inc., of which Mr. Portman is the Chief Executive Officer. This Form 3 is being filed to report Mr. Portman's voting control over such securities, but Mr. Portman's personal indirect beneficial ownership does not exceed 10% of the stock in the issuer.
- F2The warrant does not expire.